Nissan Versa Sedan. Instruction — part 612
PCS-34
< SYSTEM DESCRIPTION >
[IPDM E/R (WITHOUT I-KEY)]
SYSTEM
RELAY CONTROL SYSTEM : System Description
INFOID:0000000009266432
IPDM E/R activates the internal control circuit to perform the relay ON-OFF control according to the input sig-
nals from various sensors and the request signals received from control units via CAN communication.
CAUTION:
To prevent damage to the parts, IPDM E/R integrated relays cannot be removed.
POWER CONSUMPTION CONTROL SYSTEM
POWER CONSUMPTION CONTROL SYSTEM : System Diagram
INFOID:0000000009266433
POWER CONSUMPTION CONTROL SYSTEM : System Description
INFOID:0000000009266434
OUTLINE
• IPDM E/R incorporates a power consumption control function that reduces the power consumption accord-
ing to the vehicle status.
Control relay
Input/output
Transmit unit
Control part
Reference page
• Headlamp high relay
• Headlamp low relay
• High beam request signal
• Low beam request signal
BCM (CAN)
• Headlamp high
• Headlamp low
• Daytime light relay 2
Tail lamp relay
Position light request signal
BCM (CAN)
• Parking lamp
• License plate lamp
• Tail lamp
• Illumination system
• Front wiper relay
• Front wiper high relay
Front wiper request signal
BCM (CAN)
Front wiper motor
A/C relay
A/C request signal
• BCM (CAN)
• ECM (CAN)
A/C compressor
(Magnet clutch)
Starter control relay
Starter control relay signal
BCM (CAN)
Starter motor
Transmission range switch signal
(CVT models)
Transmission range
switch
Clutch interlock switch signal (M/T
models)
Clutch interlock
switch
• Cooling fan low relay
• Cooling fan high relay
Cooling fan request signal
ECM (CAN)
Cooling fan motor (low)
Cooling fan motor (high)
ECM relay
ECM relay control signal
ECM (CAN)
ECM
Throttle control motor relay Throttle control motor control signal
ECM (CAN)
ECM
Fuel pump relay
Fuel pump request signal
ECM (CAN)
Fuel pump
Ignition relay
Ignition switch ON or START signal
Ignition switch
Ignition switch ON or
START power
ALCIA0030GB
PCS
SYSTEM
PCS-35
< SYSTEM DESCRIPTION >
[IPDM E/R (WITHOUT I-KEY)]
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• IPDM E/R changes its status (control mode) with the sleep wake up signal received from BCM via CAN com-
munication.
Normal mode (wake-up)
- CAN communication is normally performed with other control units.
- Individual unit control by IPDM E/R is normally performed.
Low power consumption mode (sleep)
- Low power consumption control is active.
- CAN transmission is stopped.
SLEEP MODE ACTIVATION
• IPDM E/R judges that the sleep-ready conditions are fulfilled when the ignition switch is OFF and none of the
conditions below are present. Then it transmits a sleep-ready signal (ready) to BCM via CAN communica-
tion.
- Outputting signals to actuators
- Switches or relays operating
- Output requests are being received from control units via CAN communication.
• IPDM E/R stops CAN communication and enters the low power consumption mode when it receives a sleep
wake up signal (sleep) from BCM and the sleep-ready conditions are fulfilled.
WAKE-UP OPERATION
• IPDM E/R changes from the low power consumption mode to the normal mode when it receives a sleep
wake-up signal (wake up) from BCM or any of the following conditions is fulfilled. In addition, it transmits a
sleep-ready signal (not-ready) to BCM via CAN communication to report the CAN communication start.
- Ignition switch ON
- An output request is received from a control unit via CAN communication.
PCS-36
< SYSTEM DESCRIPTION >
[IPDM E/R (WITHOUT I-KEY)]
DIAGNOSIS SYSTEM (IPDM E/R)
DIAGNOSIS SYSTEM (IPDM E/R)
Diagnosis Description
INFOID:0000000009266435
AUTO ACTIVE TEST
Description
In auto active test, the IPDM E/R sends a drive signal to the following systems to check their operation.
• Front wiper (LO, HI)
• Parking lamp
• License plate lamp
• Tail lamp
• Front fog lamp
• Headlamp (LO, HI)
• A/C compressor (magnet clutch)
• Cooling fan
Operation Procedure
NOTE:
Never perform auto active test in the following conditions.
• Passenger door is open
• CONSULT is connected
1. Close the hood and lift the wiper arms from the windshield. (Prevent windshield damage due to wiper
operation)
NOTE:
When auto active test is performed with hood opened, sprinkle water on windshield beforehand.
2. Turn the ignition switch OFF.
3. Turn the ignition switch ON, and within 20 seconds, press the driver door switch 10 times. Then turn the
ignition switch OFF.
4. Turn the ignition switch ON within 10 seconds. After that the horn sounds once and the auto active test
starts.
5. After a series of the following operations is repeated 3 times, auto active test is completed.
NOTE:
• When auto active test has to be cancelled halfway through test, turn the ignition switch OFF.
• When auto active test is not activated, door switch may be the cause. Check door switch. Refer to
Inspection in Auto Active Test
When auto active test is actuated, the following operation sequence is repeated 3 times.
Operation se-
quence
Inspection location
Operation
1
Front wiper
LO for 5 seconds
→ HI for 5 seconds
2
• Parking lamp
• License plate lamp
• Tail lamp
• Front fog lamp
10 seconds
3
Headlamp
LO for 10 seconds
→HI ON ⇔ OFF 5 times
4
A/C compressor (magnet clutch)
ON
⇔ OFF 5 times
5
Cooling fan
LO for 5 seconds
→ MID for 3 seconds → HI for 2 seconds
PCS
DIAGNOSIS SYSTEM (IPDM E/R)
PCS-37
< SYSTEM DESCRIPTION >
[IPDM E/R (WITHOUT I-KEY)]
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Concept of Auto Active Test
• IPDM E/R starts the auto active test with the door switch signals transmitted by BCM via CAN communica-
tion. Therefore, the CAN communication line between IPDM E/R and BCM is considered normal if the auto
active test starts successfully.
• The auto active test facilitates troubleshooting if any systems controlled by IPDM E/R cannot be operated.
Diagnosis Chart in Auto Active Test
CONSULT Function (IPDM E/R)
INFOID:0000000009266436
APPLICATION ITEM
CONSULT performs the following functions via CAN communication with IPDM E/R.
JMMIA0812GB
Symptom
Inspection contents
Possible cause
Any of the following components do not operate
• Parking lamp
• License plate lamp
• Tail lamp
• Front fog lamp
• Headlamp (HI, LO)
• Front wiper (HI, LO)
Perform auto active test.
Does the applicable system op-
erate?
YES
BCM signal input circuit
NO
• Lamp or motor
• Lamp or motor ground circuit
• Harness or connector between
IPDM E/R and applicable system
• IPDM E/R
A/C compressor does not operate
Perform auto active test.
Does the magnet clutch oper-
ate?
YES
• BCM signal input circuit
• CAN communication signal be-
tween BCM and ECM
• CAN communication signal be-
tween ECM and IPDM E/R
NO
• Magnet clutch
• Harness or connector between
IPDM E/R and magnet clutch
• IPDM E/R
Cooling fan does not operate
Perform auto active test.
Does the cooling fan operate?
YES
• ECM signal input circuit
• CAN communication signal be-
tween ECM and IPDM E/R
NO
• Cooling fan motor
• Harness or connector between
IPDM E/R and cooling fan motor
• IPDM E/R
Direct Diagnostic Mode
Description
Ecu Identification
The IPDM E/R part number is displayed.
Self Diagnostic Result
The IPDM E/R self diagnostic results are displayed.
Data Monitor
The IPDM E/R input/output data is displayed in real time.
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